CVE-2025-12908 is a vulnerability identified in Google Chrome for Android prior to version 140.0.7339.80, involving insufficient validation of untrusted input within the Downloads component. This flaw allows a remote attacker to craft malicious HTML pages that can spoof domains, misleading users into believing they are interacting with legitimate websites. The vulnerability arises because Chrome does not adequately verify or sanitize input related to downloaded content, enabling attackers to manipulate the displayed domain information. Exploitation requires the victim to interact with the crafted HTML page, typically by visiting a malicious or compromised website. The attack vector is remote and does not require any privileges or prior authentication, making it accessible to any attacker capable of luring users to the malicious content. The CVSS v3.1 base score is 5.4, reflecting a medium severity level, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:N), user interaction required (UI:R), unchanged scope (S:U), limited confidentiality impact (C:L), no integrity impact (I:N), and low availability impact (A:L). Although the vulnerability does not directly compromise integrity or availability, the domain spoofing capability can facilitate phishing attacks, credential theft, or distribution of malware by deceiving users about the authenticity of downloaded files or websites. Currently, there are no known exploits in the wild, but the presence of this vulnerability in a widely used browser on Android devices poses a significant risk if left unpatched. The vulnerability was publicly disclosed on November 7, 2025, and users are advised to update to Chrome version 140.0.7339.80 or later where the issue is resolved.

For European organizations, this vulnerability primarily threatens user confidentiality by enabling attackers to conduct domain spoofing attacks that can deceive employees into divulging sensitive information or downloading malicious payloads. Given the widespread use of Google Chrome on Android devices across Europe, especially in corporate environments where mobile device usage is prevalent, the risk of successful phishing campaigns increases. This can lead to credential compromise, unauthorized access to corporate resources, and potential lateral movement within networks. While the vulnerability does not directly affect system integrity or availability, the indirect consequences of successful social engineering attacks can be severe, including data breaches and financial losses. Organizations with remote or mobile workforces are particularly vulnerable, as attackers can exploit this flaw to target users outside traditional network perimeters. The absence of known active exploits provides a window for mitigation, but the medium severity rating underscores the need for timely patching and user awareness to prevent exploitation.

1. Immediate update of all Google Chrome installations on Android devices to version 140.0.7339.80 or later to ensure the vulnerability is patched. 2. Implement mobile device management (MDM) solutions to enforce browser updates and monitor device compliance within the organization. 3. Conduct targeted user awareness training focusing on recognizing phishing attempts and suspicious download prompts, emphasizing caution when interacting with unknown or unsolicited HTML content. 4. Deploy advanced email and web filtering solutions to detect and block malicious URLs or attachments that could host crafted HTML pages exploiting this vulnerability. 5. Encourage the use of multi-factor authentication (MFA) to reduce the impact of credential compromise resulting from phishing attacks facilitated by domain spoofing. 6. Monitor network traffic and endpoint logs for unusual download activities or access to suspicious domains that may indicate exploitation attempts. 7. Coordinate with security teams to include this vulnerability in threat hunting and incident response playbooks, ensuring rapid detection and containment if exploitation occurs.